Lists of mountains in Ireland

In these lists of mountains in Ireland, those within Northern Ireland, or on the Republic of Ireland – United Kingdom border, are marked with an asterisk, while the rest are within the Republic of Ireland. Where mountains are ranked by height, the definition of the topographical prominence used to classify the mountain, is noted. In British definitions, a height of is required for a mountain, whereas in Ireland, a lower threshold of is sometimes advocated.
The lowest minimum prominence threshold of any definition of an Irish mountain is , however most definitions, including the International Climbing and Mountaineering Federation criteria, do not consider prominences below as being mountains. Many British definitions consider a peak with a prominence below, as being a top, and not a mountain. A widely used definition of an Irish mountain requires a minimum prominence of , and is the basis for the 100 Highest Irish Mountains.
While Irish mountains are ranked according to Irish classifications, they are also ranked on classifications that cover Great Britain and Ireland.

Definitions

General concepts

There is no consensus on the definition of "mountain", but in Britain and Ireland it is often taken to be a summit over 2,000 ft, or more latterly, 600 m. There is less consensus about the topographical prominence requirement, which can vary between. Prominence is even strongly debated regarding UIAA classification of Himalayan mountains. In the alps, the UIAA requires a prominence of over 30 m to be a "peak" and over 300 m to be a "mountain".
The lowest threshold of prominence in Britain and Ireland is. The only definition in which prominence is not used, is where topographic isolation is used. Most Britain and Ireland definitions no longer categorise prominences below , and peaks with a prominence between are now defined as tops rather than mountains.
In Ireland, a prominence threshold of is proposed for a mountain.

Main classifications

Other classifications

The term Dillon is used to describe any of the 212 Irish summits in Paddy Dillon's well–regarded Irish 2010 climbing guidebook: "The Mountains of Ireland". All of Dillon's summits are over, and almost all have a prominence above .
The term Myrddyn Deweys are peaks in Ireland, between 500 metres to in height, with a prominence above, which was published by Michael Dewey and Myrddyn Phillips in 2000. Myrddyn Deweys are the Irish equivalent of Deweys, which extend the Hewitt classification down to 500 metres. There are 200 Myrddyn Deweys.

''MountainViews Online Database''

MountainViews was created in 2002 by Simon Stewart as a non–profit online database for climbers in Ireland to document and catalogue their Irish climbs. Its main data source are from the Ordnance Survey Ireland maps, although it also conducts its own surveys, which the OSI has integrated into its own database, and it also integrates other important Irish mountain databases such as the Paul Tempan's work with the Placenames Database of Ireland. Collins Press published the MountainView Online Datase in 2013 in the book: A Guide to Ireland's Mountain Summits: The Vandeleur-Lynams & the Arderins.
Since 2012, MountainViews has been partnered with the Database of British and Irish Hills, which is the main live database for the categorisation of mountains and hills in Britain and Ireland. However, MountainViews can differ slightly from DoBIH on the measurements for certain Irish mountains.

List of the 10 Highest MacGillycuddy's Reeks

The MacGillycuddy's Reeks range contains Ireland's highest mountain, Carrauntoohil, and the Reeks is the highest range of peaks in Ireland. However, many of its peaks do not meet all classification criteria for a "mountain", and many are not in the 100 Highest Irish Mountains. Regardless, the range contains ten of the thirteen Scottish Furths in Ireland, and given its importance, and as an important example of complexity of mountain classification, the ten highest Reeks are listed below:

Rank	Irish name	Other names	Height	Prominence	Listed	Not Listed
1	Corrán Tuathail	Carrauntoohil			Real Munro, Furth, P600, Marilyn, Hewitt, Simm, Vandeleur-Lynam, Arderin, MountainViews	—
2	Binn Chaorach	Beenkeragh, Benkeeragh			Furth, Hewitt, Simm, Vandeleur-Lynam, Arderin	Real Munro, P600, Marilyn, MountainViews
3	Cathair na Féinne	Caher, Caher East Top			Furth, Hewitt, Simm, Vandeleur-Lynam, Arderin	Real Munro, P600, Marilyn, MountainViews
4	Cnoc na Péiste	Knocknapeasta			Real Munro, Furth, Marilyn, Hewitt, Simm, Vandeleur-Lynam, Arderin, MountainViews	P600
5	Cathair Thiar	Caher West Top			Furth, Vandeleur-Lynam	Real Munro, P600, Marilyn, Hewitt, Simm, Arderin, MountainViews
6	Maolán Buí	—			Furth, Hewitt, Simm, Vandeleur-Lynam, Arderin	Real Munro, P600, Marilyn, MountainViews
7	Cnoc an Chuillinn	—			Furth, Hewitt, Simm, Vandeleur-Lynam, Arderin	Real Munro, P600, Marilyn, MountainViews
8	Na Cnámha	Carrauntoohil Tooth, The Bones, Knockoughter			Furth, Hewitt, Simm, Vandeleur-Lynam, Arderin	Real Munro, P600, Marilyn, MountainViews
9	An Gunna Mór	The Big Gun			Furth, Hewitt, Simm, Vandeleur-Lynam, Arderin	Real Munro, P600, Marilyn, MountainViews
10	Cruach Mhór	—			Furth, Hewitt, Simm, Vandeleur-Lynam, Arderin	Real Munro, P600, Marilyn, MountainViews

''100 Highest Irish Mountains''

This is the MountainViews 100 Highest Irish Mountains list, which was published by Collins Press in the 2013 book: A Guide to Ireland's Mountain Summits: The Vandeleur-Lynams & the Arderins. It combines Paul Tempan's 2012 research into Irish mountains and Irish mountain names. The list requires a prominence of over, a compromise between the popular British Isles Marilyn criteria of 150 metres, and the Simms–Hewitt–Arderins criteria of 30 metres. It is a widely used list, and it contains 25 of the 26 Irish P600s.

Rank	Name	Irish name	Translation	Area/Range	Province	County	Height	Prom.	Rating
1	Carrauntoohil Highest in Munster	Corrán Tuathail	Tuathal's sickle	MacGillycuddy's Reeks	Munster	Kerry			82%
2	Knocknapeasta	Cnoc na Péiste	hill of the serpent	MacGillycuddy's Reeks	Munster	Kerry			94%
3	Brandon	Cnoc Bréanainn	Brendan's hill	Brandon Group	Munster	Kerry			86%
4	Lugnaquilla Highest in Leinster	Log na Coille	hollow of the wood	Wicklow Mountains	Leinster	Wicklow			74%
5	Galtymore	Cnoc Mór na nGaibhlte	big hill of the Galtees	Galty Mountains	Munster	Limerick/Tipperary			80%
6	Baurtregaum	Barr Trí gCom	top of the three hollows	Slieve Mish	Munster	Kerry			85%
7	Slieve Donard* Highest in Ulster	Sliabh Dónairt	peak Domhangart	Mourne Mountains	Ulster	Down			77%
8	Mullaghcleevaun	Mullach Cliabháin	summit of the cradle	Wicklow Mountains	Leinster	Wicklow			74%
9	Brandon Peak	Barr an Ghéaráin	top of the fang	Brandon Group	Munster	Kerry			92%
10	Mangerton	An Mhangarta	long–haired mountain	Mangerton Mountains	Munster	Kerry			79%
11	Caherconree	Cathair Conraoi	Cú Roí's fort	Slieve Mish	Munster	Kerry			88%
12	Purple Mountain	An Sliabh Corcra	purple mountain	Purple Mountain	Munster	Kerry			90%
13	Beenoskee	Binn os Gaoith	peak above the wind	Central Dingle	Munster	Kerry			91%
14	Lyracappul	Ladhar an Chapaill	fork of the horse	Galty Mountains	Munster	Limerick			90%
15	Tonelagee	Tóin le Gaoith	back to the wind	Wicklow Mountains	Leinster	Wicklow			80%
16	Mweelrea Highest in Connacht	Maol Réidh	bald smooth top	Mweelrea Mountains	Connacht	Mayo			93%
17	Nephin	Néifinn	Fionn's paradise	North Mayo	Connacht	Mayo			82%
18	Ben Lugmore	Binn Log Mhór	peak of the big hollow	Mweelrea Mountains	Connacht	Mayo			95%
19	Greenane	An Grianán	sunny spot	Galty Mountains	Munster	Tipperary			73%
20	Mount Leinster	Stua Laighean	warrior of Leinster	Blackstairs Mountains	Leinster	Carlow/Wexford			75%
21	Knockmealdown	Cnoc Mhaoldomhnaigh	hill of Maoldomhnach	Knockmealdowns	Munster	Waterford			79%
22	Fauscoum	Fáschom	empty hollow	Comeragh Mountains	Munster	Waterford			83%
23	Stumpa Dúloigh	Stumpa Dúloigh	stump of the black lake	Dunkerron Mountains	Munster	Kerry			94%
24	Temple Hill	Cnoc an Teampaill	hill of the church	Galty Mountains	Munster	Limerick			87%
25	Mullaghanattin	Mullach an Aitinn	summit of the gorse	Dunkerron Mountains	Munster	Kerry			93%
26	Barrclashcame	Barr Chlais Céim	top of Clais Céim	Sheeffry Hills	Connacht	Mayo			89%
27	Coomacarrea	Com an Charria	hollow of the stag	Glenbeigh Horseshoe	Munster	Kerry			91%
28	Slieve Commedagh*	Sliabh Coimhéideach	guarding mountain	Mourne Mountains	Ulster	Down			82%
29	Croagh Patrick	Cruach Phádraig	Patrick's stack	Croagh Patrick	Connacht	Mayo			69%
30	Masatiompan	Más an Tiompáin	rump of the drum	Brandon Group	Munster	Kerry			92%
31	Camenabologue	Céim na mBulóg	pass of the bullocks	Wicklow Mountains	Leinster	Wicklow			71%
32	Kippure	Cipiúr		Wicklow Mountains	Leinster	Wicklow			57%
33	Knockanaffrin	Cnoc an Aifrinn	hill of the mass	Comeragh Mountains	Munster	Waterford			81%
34	Beann	An Bheann Bhán	white peak	Dunkerron Mountains	Munster	Kerry			87%
35	Errigal	An Earagail	oratory	Derryveagh Mountains	Ulster	Donegal			79%
36	Slieve Binnian*	Sliabh Binneáin	mountain of small peak	Mourne Mountains	Ulster	Down			85%
37	Broaghnabinnia	Bruach na Binne	verge of the peak	Dunkerron Mountains	Munster	Kerry			96%
38	Slieve Bearnagh*	Sliabh Bearnach	gapped mountain	Mourne Mountains	Ulster	Down			89%
39	Conavalla	Ceann an Bhealaigh	head of the pass	Wicklow Mountains	Leinster	Wicklow			70%
40	Blackstairs Mountain	Na Staighrí Dubha	the blackstairs	Blackstairs Mountains	Leinster	Carlow/Wexford			83%
41	Benbaun	Binn Bhán	white peak	Twelve Bens	Connacht	Galway			90%
42	Djouce	Dioghais	fortified height	Wicklow Mountains	Leinster	Wicklow			59%
43	Slieve Carr	Corrshliabh	pointed mountain	Nephin Beg Range	Connacht	Mayo			90%
44	Slievenamon	Sliabh na mBan	mountain of the women	Slievenamon	Munster	Tipperary			64%
45	Gravale	Droibhéal	difficult passage	Wicklow Mountains	Leinster	Wicklow			71%
46	Corranabinnia	Coire na Binne	hollow of the peak	Nephin Beg Range	Connacht	Mayo			94%
47	Meenteog	Muing	boggy area long grass	Glenbeigh Horseshoe	Munster	Kerry			92%
48	Bencorr	Binn an Choire Mhóir	pointed peak	Twelve Bens	Connacht	Galway			95%
49	Knockboy	An Cnoc Buí	yellow/golden hill	Shehy/Knockboy	Munster	Cork/Kerry			75%
50	Moanbane	Móin Bhán	white bog	Wicklow Mountains	Leinster	Wicklow			67%
51	Slievelamagan*	Sliabh Lámhagáin	creeping mountain	Mourne Mountains	Ulster	Down			85%
52	Binn idir an Dá Log	Binn idir an Dá Log	peak between two hollows	Maumturks	Connacht	Galway			93%
53	Slieve Meelbeg*	Sliabh Míol Beag	mountain of ants	Mourne Mountains	Ulster	Down			77%
54	Ben Gorm	An Bhinn Ghorm	the blue peak	Ben Gorm Mountains	Connacht	Mayo			93%
55	Birreencorragh	Birín Corrach	rocky little spike	Nephin Beg Range	Connacht	Mayo			90%
56	Bencollaghduff	Binn Dubh	black peak	Twelve Bens	Connacht	Galway			97%
57	The Paps East	Dá Chích Anann Thoir	the two breasts	Paps/Derrynasaggart	Munster	Kerry			83%
58	Keeper Hill	Sliabh Coimeálta	mountain of guarding	Silvermine Mountains	Munster	Tipperary			66%
59	Caoinkeen	An Caincín	snub/turned-up nose	Shehy/Knockboy	Munster	Cork/Kerry			88%
60	Benbreen	Binn Bhraoin	Braon's peak	Twelve Bens	Connacht	Galway			95%
61	Knocknadobar	Cnoc na dTobar	hill of the wells	Iveragh Peninsula	Munster	Kerry			83%
62	The Paps West	Dá Chích Anann Thiar	the two breasts	Paps/Derrynasaggart	Munster	Kerry			89%
63	Croaghaun	Cruachán	little stack	Achill	Connacht	Mayo			95%
64	Hungry Hill	Cnoc Daod	hill of the tooth	Caha Mountains	Munster	Cork			90%
65	Knockmoyle	Cnoc Maol	bald or round hill	Dunkerron Mountains	Munster	Kerry			82%
66	Maumtrasna	Mám Trasna	pass across	Partry/Joyce Country	Connacht	Mayo			85%
67	Caherbarnagh	An Chathair Bhearnach	the gapped fort	Paps/Derrynasaggart	Munster	Cork			74%
68	Slieve Meelmore*	Sliabh Míol Mór	mountain of ants	Mourne Mountains	Ulster	Down			78%
69	Colly Mountain	An Bheann Mhór	the big peak	Glenbeigh Horseshoe	Munster	Kerry			84%
70	Sawel*	Samhail Phite Méabha	resemblance of Maeve's vulva	Sperrin Mountains	Ulster	Londonderry/Tyrone			83%
71	Slieve Snaght	Sliabh Sneachta	mountain of snow	Derryveagh Mountains	Ulster	Donegal			91%
72	Derryclare	Binn Doire Chláir	the peak of Derryclare	Twelve Bens	Connacht	Galway			91%
73	Knocknagantee	Cnoc na gCainte	hill of the conversation	Dunkerron Mountains	Munster	Kerry			88%
74	An Bheann Mhór	An Bheann Mhór	the big peak	Dunkerron Mountains	Munster	Kerry			87%
75	Croaghgorm	An Chruach Ghorm	the blue stack	Bluestack Mountains	Ulster	Donegal			91%
76	Slievemore	An Sliabh Mór	the big mountain	Achill	Connacht	Mayo			87%
77	Lavagh More	An Leamhach Mhór	the big place of elms	Bluestack Mountains	Ulster	Donegal			94%
78	Slievanea NE Top	Sliabh Macha Ré	the smooth plain	Central Dingle	Munster	Kerry			87%
79	Slieve Muck*	Sliabh Muc	mountain of the pigs	Mourne Mountains	Ulster	Down			83%
80	Muckish	An Mhucais	the pig's back/or ridge	Derryveagh Mountains	Ulster	Donegal			83%
81	Finnararagh	An Corrán	the crescent or sickle	Dunkerron Mountains	Munster	Kerry			92%
82	Letterbreckaun	Binn Bhriocáin	Brecan's peak	Maumturks	Connacht	Galway			92%
83	Knocknafallia	Cnoc na Faille	hill of the cliff	Knockmealdowns	Munster	Waterford			80%
84	Coomura Mountain	Cnoc na Faille		Dunkerron Mountains	Munster	Kerry			94%
85	Cuilcagh	Binn Chuilceach	cloaked peak	Cuilcagh Mountains	Ulster	Cavan/Fermanagh			80%
86	Bengower	Binn Gabhar	goats peak	Twelve Bens	Connacht	Galway			90%
87	Croaghanmoira	Cruachán Mhaigh Rath	little stack of Moira	Wicklow Mountains	Leinster	Wicklow			74%
88	Sugarloaf Hill	Cnoc na gCloch	hill of the stones	Knockmealdowns	Munster	Tipperary/Waterford			71%
89	Binn Mhór	Binn Mhór	big peak	Maumturks	Connacht	Galway			86%
90	Mullacor	Mullach Mhór	big summit	Wicklow Mountains	Leinster	Wicklow			62%
91	Beenmore	Binn Mhór	big peak	Glenbeigh Horseshoe	Munster	Kerry			89%
92	Knockowen	Cnoc Eoghain	hill of Eoghan	Caha Mountains	Munster	Cork/Kerry			89%
93	Chimney Rock Mtn*	Sliabh an Aoire	Shepherd mountain	Mourne Mountains	Ulster	Down			86%
94	Muckanaght	Meacanacht	Pig's back	Twelve Bens	Connacht	Galway			92%
95	Keadeen Mountain	Céidín	Flat–topped hill	Wicklow Mountains	Leinster	Wicklow			80%
96	Knockshanahullion	Cnoc Seanchuillinn	hill of the old holly	Knockmealdowns	Munster	Tipperary			70%
97	Dooish Mountain	An Dubhais	the black ridge	Derryveagh Mountains	Ulster	Donegal			90%
98	Crohane	An Cruachán	the little stack	Mangerton Mountains	Munster	Kerry			83%
99	Mullaghanish	Mullach an Ois	summit of the deer	Paps/Derrynasaggart	Munster	Cork/Kerry			48%
100	Coomcallee	Com Caillí	the hollow of the hag	Dunkerron Mountains	Munster	Kerry			84%